SDN restructures telecommunications networks to adapt to Internet applications
Although network architecture reconstruction and innovation have richer connotations, SDN provides a new architecture that is more open, flexible, and sustainably evolving, providing a fundamental means and best solution to many problems existing in traditional network architecture. opportunities for reconstruction.
The development of telecommunications networks has gone through three stages of transformation: analog communication, digital communication and the Internet. The fourth network architecture transformation is represented by SDN/NFV and Open Stack. It is characterized by control Separation from processing, separation of software and hardware, network element virtualization, and network programmability.
The network reconstructed based on SDN will achieve a fundamental transformation from "Internet applications passively adapt to the network" to "the network actively, quickly and flexibly adapts to Internet applications".
At the same time, the deployment of networks and resources will break the constraints of the administrative management system and traditional networking ideas, and shift to a new pattern with IDC as the core.
The reconstruction of network architecture for Internet applications has played a series of subversive effects on traditional telecommunications networks, forming a new architecture with simplicity, agility, openness and concentration as its basic characteristics.
SDN itself is an innovative network architecture and the main technical path for network architecture reconstruction. It will also simultaneously involve organizational reconstruction, operation reconstruction, process reconstruction and even industry chain reconstruction, etc., which requires a large-scale determination andMajor surgery is needed to achieve full success.
At the same time, the introduction of new architecture needs to coexist with the existing architecture for a long time, not only to be interconnected, but also to be smoothly integrated without affecting the business.
In the face of such demand, the existing chimney-style OSS is unsuitable because it cannot support end-to-end service management, while LSO provides an idea for managing old and new hybrid networks.
